I know most of you that are reading this are wondering "what are regular and irregular verbs" well here is your answer. When using regular you are talking about the present tense of the verb. Present tense is like what you are doing in the present, right know. (Example: I'm talking to my friend) All verbs have them. (WARNING: the word vosotros is a very uncomon. Not many use this form. So be cautious when writing)
This is the AR present tense endings
Yo- o (Yo canto or I sing)
Tu- as (Tu cantas or You sing)
El- a (El canta or He sings)
Ella- a (Ella canta or She is singing)
Usted- a (Usted canta or You do sing (formal))
Nosotros- amos (Nosotros cantamos or We sing)
Vosotros- áis (Vosotros cantáis or You all sing)
Ellos- an (Ellos cantan or They sing(either all male group or mixed group)
Ellas- an (Ellas cantan or They sing(all female group)
Ustedes- an (Ustedes cantan or You-all or yall do sing)

This is how it works take the word CANTAR (to sing) and do this
Yo- cantar-ar+o (take the word cantar take away the -ar and add o)= Yo canto
Tu- cantar-ar+as (take the word cantar take away the -ar and add as)= Tu canta
El- cantar-ar+a (take the word cantar, take awat the -ar and add a)= Elcanta
Ella- cantar-ar+a (take the word cantar, take awat the -ar and add a)= Ella canta
Usted- cantar-ar+a (take the word cantar, take away the -ar and add a)=Usted canta
Nosotros- cantar-ar+amos (take the word cantar, take away the the -ar and add amos)= Nosotros cantamos
Vosotros- cantar-ar+áis(take the word cantar, take away the -ar and add áis )= Vosotros cantáis
Ellos- cantar-ar+an(take the word cantar, take away the -ar and add an an)= Elloscantan
Ellas- cantar-ar+an(take the word cantar, take away the -ar and add an an)= Ellas cantan
Ustedes- cantar-ar+an(take the word cantar, take away the -ar and add an *an*)= Ustedes cantan

This is the ER present tense endings
Yo- o (Yo bebo or I drink)
Tu- es (Tu bebes or You drink)
El- e (El bebe or He drinks)
Ella- e (Ella bebe or She drinks)
Usted- e (Usted bebe or You are
Nosotros- emos (Nosotros bebemos or We drink)
Vosotros- éis (Vosotros bebéis or You all drink)
Ellos- en (Ellos beben or They drink(Either all male group or mixed group))
Ellas- en (Ellas beben or They drink(All female group))
Ustedes -en (Ustedes beben or You-all do eat)

This is how it works, take the word BEBER (to drink) and do this
Yo- beber-er+o(take teh word beber, take away the -er and add o)= Yo bebo
Tu- beber-er+es(take the word beber, take away teh -er and add es)= Tu bebes
El- beber-er+e(take the word beber, take away the -er and add e)= El bebe
Ella- beber-er+e(take the word beber, take away -er and add e)= Ella bebe
Usted- beber-er+e(take the word beber, take away the -er and add e)= Usted bebe
Nosotros- beber-er+emos(take the word beber, take away the -er and add emos)= Nosotros bebemos
Vosotros- beber-er+éis(take the word beber, take away -er and add éis)= Vosotros bebéis
Ellos- beber-er+en(take the word beber, take away -er and add en)= Ellos beben
Ellas- beber-er+en(take the word beber, take away -er and add en)=Ellas beben
Ustedes- beber-er+en(take the word beber, take away -er and add en)= Ustedes beben

This is the IR present tense endings
Yo- o (Yo abro or I open)
Tu- es (Tu abres or You open)
El- e (El abre or He opens)
Ella- e (Ella aabre or She opens)
Usted- e (Usted abre or You(formal) open)
Nosotros-imos (Nosotros abrimos or We open)
Vosotros-is (Vosotros abris or You all drink)
Ellos- en (Ellos abren or They open(Either all male group or mixed group))
Ellas- en (Ellas abren or They open(All female group))
Ustedes- en (Ustedes abren or you all open)

This is how it works, take the word ABRIR (to open) and do this
Yo- abrir-ir+o(take the word abrir, take away the -ir and add o)= Yo abro
Tu- abrir-ir+es(take the word abrir, take away the -ir and add es)= Tu
abres)
El- abrir-ir+e(take the word beber, take away the -ir and add e)= El
abre
Ella- abrir-ir+e(take the word abrir, take away -ir and add e)=
Ella abre
Usted- abrir-ir+e(take the word abrir, take away the -ir and add e)=
Usted abre
Nosotros- abrir-ir+imos(take the word beber, take away the -er and add
emos)= Nosotros abrimos
Vosotros- abrir-ir+ís(take the word beber, take away -er and add éis)=
Vosotros abrís
Ellos- abrir-ir+en(take the word beber, take away -ir and add en)= Ellos
abren
Ellas- abrir-ir+en(take the word beber, take away -ir and add en)= Ellas
abren
Ustedes- abrir-ir+en(take the word beber, take away -ir and add en)=
Ustedes abren

Ver- to go
Ver is an acception of an irregular verb these are the conjugations
Yo- voy
Tu- vas
El- va
Ella- va
Usted- va
Nosotros- vamos
Vosotros- vois
Ellos- van
Ellas- van
Ustedes- van
Not all of them are -IR but there are few that are the acception. Be careful when conjugating your words. Some other irregular verbs are