Czech verbs in infinitive usually end by -t or -ti but we can find some with -ci or -ct which doesn't influence conjugation at all. However the most important verbs such as být (to be) are irregular so the best way to learn them is separately for ex. from this summary. To be able to conjugate regular ones we have to divide them in 5 classes based on their present form in the 3rd person of singular. Native speaker does it naturally and most of Czechs doesn't even know about existence of classes. Foreigner has to learn not just infinitives and their traductions but the present in 3rd p. of sg. If you know it, you can simply change the suffixe for other person.

Frequently-used verbs and their present form in 3rd p. of sgEdit

czech infinitive present form traduction (infi) class
číst on čte to read he's reading 1
jet/jít on jde to go he's going 1
psát on píše to write he's writing 1
žít on žije to live he's living 3
milovat on miluje to love he loves 3
stát on stojí to stand/to cost he's standing 4
spát on spí to sleep he's sleeping 4
jíst on jí to eat he's eating 4
volat on volá to call he's calling 5

1st class: -eEdit

nést - on nese (to carry)

sg pl
1st já nesu my neseme
2nd ty nes vy nesete
3rd on nese oni nesou

psát - on píše (to write)

sg pl
1st já píši my píšeme
2nd ty píš vy píšete
3rd on píše oni píší

2nd class: -neEdit

začít - on začne (to start)

sg pl
1st já začnu my začneme
2nd ty začneš vy začnete
3rd on začne oni začnou

3rd class: -jeEdit

kupovat - on kupuje (to buy)

sg pl
1st já kupuji my kupujeme
2nd ty kupuješ vy kupujete
3rd on kupuje oni kupu

4th class: -íEdit

prosit - on prosí (to beg)

sg pl
1st já prosím my prosíme
2nd ty prosíš vy prosíte
3rd on prosí oni prosí

5th class: -áEdit

dělat - on dělá (to do)

sg pl
1st já dělám my děláme
2nd ty děláš vy děláte
3rd on dělá oni dělají