Hi!
Recently I got Vodhin's cafe set and I don't know how to use it can someone help??

I mean by mking restaurants and stuff.

I've never used it properly, but I think the idea is you place the buffet peices in a row where people get their food (they don't really, it's just for show), tehn fill the seating are with paths. You then place the tables and chairs how you want them to make it look like a restaurant. Assuming you're using the updated set, the peices will be in different places. Some of the set is under Objects, some under Path Extras, and some probably under Walls.

My advice would be to have a look around at other people's parks so you can see how they've used them. Check Vodhin's thread on the Atari Forums as well, as he may explain how to use them.