Biblical Hebrew for All
The Hebrew name of the book is
תְּהִלִּים
which is the m. pl. of the female noun and literally means, 
"praise songs."
This noun stems from the same verb that has the form 
"hal-lu-yah."
מִזְמוֹר
is a m. sg. noun meaning, "melody," and appears in 57 Psalms beginning at Psalm 3.
The English title is derived from the Greek translation ψαλμοί meaning, "instrumental music" and, by extension, "the words accompanying the music."


Introduction

This is the first book of the Ketuvim ("Writings"), the third section of the Hebrew Bible (the Tanakh). The book is an anthology of 150 individual Psalms. 

Authors, Date

Various authors writing between the 9th and 5th centuries BC.
Many psalms (116 of the 150) have individual superscriptions (titles), ranging from lengthy comments to a single word.Many carry the names of individuals, the most common (73 psalms) (75 if including the two Psalms attributed by the NT to David) being 'of David', and thirteen of these relate explicitly to incidents in the king's life. Others named include Asaph (12), the sons of Korah (11), Solomon (2), Moses (1), Ethan the Ezrahite (1), and Heman the Ezrahite (1).
The Septuagint, the Peshitta (the Syriac Vulgate), and the Latin Vulgate each associate several Psalms (111 and 145) with Haggai and Zechariah. The Septuagint also attributes Psalms (112 and 135) to Ezekiel and Jeremiah.

Contents

The Book of Psalms is divided into five sections, each closing with a doxology (a benediction).These divisions were probably introduced by the final editors to imitate the five-fold division of the Torah.1-41  42-72  73-89  90-106  107-150

Additional psalms

The Septuagint, present in Eastern Orthodox churches, includes a Psalm 151; a Hebrew version of this was found in the Psalms Scroll of the Dead Sea Scrolls.
Some versions of the Peshitta (the Bible used in Syriac churches in the Middle East) include Psalms 152–155. There are also the Psalms of Solomon, which are a further 18 psalms of Jewish origin, likely originally written in Hebrew, but surviving only in Greek and Syriac translation. These and other indications suggest that the current Western Christian and Jewish collection of 150 psalms were selected from a wider set.
Click here for a comprehensive article on Psalms in Wikipedia.


An extract from the BHFA Volume 5 textbook

Psalm 1:3a

וְהָיָה           כְּעֵץ            שָׁתוּל          עַל־ פַּלְגֵ       מָיִם

water  on canals of   transplanted   like a tree  and he will be

  • KJB     He is like a tree planted beside flowing streams 
  • NASB   He will be like a tree firmly planted by streams of water, 
  • ESV     He is like a tree planted by streams of water
  • NLT     They are like trees planted along the riverbank,
  • NIV     That person is like a tree planted by streams of water, 
  • LXX     An he will be as the tree being planted by the outlet of the waters
  • Vulg     And he shall be like a tree which is planted near the running waters

שָׁתוּל

Qal part. pass. of the verb   שָׁתַל  meaning, "to transplant." This verb occurs 10 times in the Hebrew Bible, and is always (incorrectly) translated as "plant" in modern English translations.The MT clearly states that the tree was brought from another (less auspicious?) place, and transplanted here.
The Segholate noun  פַּלְגֵי  literally means, "channel" or "artificial canal." In this metaphor, a stream would emphasize the abundance of water, whereas the image of a man-made irrigating canal or channel would add the concept of a reliant source. In Ps 46:5 we find "a river whose streams," suggesting an irrigation canal that was dug by a farmer (God) and leading from a river to his fields.
An extract from the BHFA Volume 5 textbook

Psalm 18:34a

מְשַׁוֶּה         רַגְלַי                 כָּאַיָּלוֹת 

like young female antelopes    my feet      he sets

  • KJB     He maketh my feet like hinds' feet, 
  • NASB   He makes my feet like hinds' feet, 
  • ESV     He made my feet like the feet of a deer 
  • NLT     He makes me as surefooted as a deer, 
  • NIV     He makes my feet like the feet of a deer; 
  • Afr 53   Hy maak my voete soos dié van herte (hinds = female deer = doe)
  • Afr 83   Hy my voete soos die van n ribbok (reebok / rhebok)

כָּאַיָּלוֹת

Preposition כָּ + the plural form of the female noun אַיָּלָה  which in turn is from the male noun  אַיִל which means "ram" (for sacrificial purposes) as in Ex 29:22.
This exact phrase occurs in three locations in the Hebrew Bible namely 2 Sm 22:34, Hb 3:19, and here in Ps 18:34.
The Nubian ibex (Capra nubiana) is a desert-dwelling goat species found in mountainous areas of northern and northeast Africa, and the Middle East. Its range is within Egypt, Israel, Jordan, Lebanon, etc. In Israel, the historically dense ibex population, described in the Hebrew Bible 
(Psalm 104:18), was decimated in the wake of the First World War. 
 The sudden availability of rifles enabled Bedouin to hunt them to near extinction. After the establishment of the state of Israel, when hunting was outlawed and nature reserves were created in which they were protected, the ibex population rebounded. Three populations have been discovered in Israel: 
in the Judean Desert, the Negev mountains and Eilat."
"The klipspringer (Oreotragus oreotragus) is a small antelope found in eastern and southern Africa. The vernacular name "klipspringer" is a compound of the Afrikaans words "klip" (rock) and "springer" (leaper). The klipspringer inhabits places characterized by rocky terrain and sparse vegetation. 
A klipspringer’s hooves are cylindrical and downward-pointing, giving it a tiptoe walk and provide an amazing sure-footed agility on the rocks."

Psalm 22:2a

 הַרְפּוּ      וּדְעוּ,     כִּי־    אָנֹכִי     אֱלֹהִים

you forsaked me     why        my God  my God


  • KJB      Be :
  • NASB   “Stop striving and know that I am God;
  • ESV     “Be still, and know that I am God.
  • NLT     “Be still, and know that I am God!
  • NIV      He says, “Be still, and know that I am God;
  • CSB     “Stop fighting, and know that I am God,
  • LSV      Desist, and know that I [am] God,
  • YLT      Desist, and know that I am God,

הַרְפּוּ

Hiph'il imperative (a command) 3mp of the root רפה  The."In the Hiph'il." It hand.
An extract from the BHFA Volume 5 textbook

Psalm 46:11a

 הַרְפּוּ      וּדְעוּ,     כִּי־    אָנֹכִי     אֱלֹהִים

God            I (am)       that       and know    be calm !!

  • KJB      Be still, and know that I am God:
  • NASB   “Stop striving and know that I am God;
  • ESV     “Be still, and know that I am God.
  • NLT     “Be still, and know that I am God!
  • NIV      He says, “Be still, and know that I am God;
  • CSB     “Stop fighting, and know that I am God,
  • LSV      Desist, and know that I [am] God,
  • YLT      Desist, and know that I am God,

הַרְפּוּ

Hiph'il imperative (a command) 3mp of the root רפה  The core meaning of this root is, "to drop your hands (from whatever you are doing)" or "to relax."
In the Hiph'il it takes on the meaning of, "to cease doing something" "to keep calm"   "to relax"   "to let go"   "to desist." 
It is employed in the sense of not making an effort; and then would express the idea of leaving matters with God, and of being without anxiety about the issue at hand.
An extract from the BHFA Volume 5 textbook

Psalm 131

131:1a

שִׁיר         הַמַּעֲלוֹת       לְדָוִד    

of David    of Ascents    a song   of Pilgrims of stairs / steps

This title is found in Psalms 120-134. A song to be sung by Pilgrims on their way up to Jerusalem for any one of the Three Pilgrimage Festivals: Pesach (Passover), Shavuot (Weeks or Pentecost), and Sukkot (Tabernacles, Tents or Booths).
131:1b

יְהוָה   לֹא־   גָבַהּ     לִבִּי      וְלֹא־           רָמוּ             עֵינַי   

my eyes   they will be exalted   and not   my heart   exalted    not Yahweh 

131:1c

וְלֹא־           הִלַּכְתִּי               בִּגְדֹלוֹת

in great matters     I walk / tread    and not

131:1d

וּבְנִפְלָאוֹת                 מִמֶּנִּי׃

 for me        nor with extraordinary things    

131:2a

          אִם־      לֹא          שִׁוִּיתִי             וְדוֹמַמְתִּי         נַפְשִׁי    

my soul     and quieted    I have calmed     not    surely

131:2b

 כְּגָמֻל             עֲלֵי      אִמּוֹ          כַּגָּמֻל           עָלַי  נַפְשִׁי׃

my soul   in me   as a weaned child   his mother   with weaned child a as 

131:3a

יַחֵל    יִשְׂרָאֵל          אֶל־יְהוָה        מֵעַתָּה              וְעַד־עוֹלָם ׃

and forever     from this time    Yahweh in        Israel     hope