Learn Croatian: Vezat ću uže prije nego što krenemo. - I will tie the rope before we set off.

After the phrase prije nego što, Croatian uses the present tense of a perfective verb to describe an action that will be completed in the future. Here we use the perfective verb krenuti (to set off). English actually does something similar by using the present tense for 'before we set off' instead of 'before we will set off'.

Why does the verb say vezat instead of the full infinitive vezati?

When forming the future tense, if a verb ending in -ti comes right before the future helper word (like ću), it drops the final -i. This is a standard spelling and pronunciation rule you will see whenever the infinitive comes first in the sentence.

What case is the word uže in here?

It is in the accusative case because it is the direct object being tied. Because uže (rope) is a neuter noun, its accusative form is completely identical to its nominative dictionary form.

Can I shorten prije nego što to just prije?

Not when a verb follows it. You can use just prije when it is followed by a noun in the genitive case, like prije puta (before the trip). But when you introduce a whole new clause with its own verb, like krenemo, you must use the full connector prije nego što.