There are 34 parties running but only about 18 end up represented in the Knesset. Each party has its basket of promises. You have to decide how much you weight security issues, economic issues and social issues. You have to look at the personalities involved and cross off (or not) all those with a criminal record or who are currently being indicted (unbelievable but true).
There is no direct representation. I don't have an MK responsible for me and my neighbourhood. Each party has a numbered list. If you are number 5 on the list and the party gets 5 seats, you are in. If your party only gets 4 seats you are out. On the other hand, if I want to lobby for a particular cause I can go to any MK and I would choose one most sympathetic to my cause.
Then you vote. Then the seats are dealt out proportionally. You need 2% of the votes to gain one seat. Excess votes, for parties that don't cross the 2% threshold, and partial seats, are transferred to the strongest party so don't waste your vote. No party has ever won an outright majority of more than 60/120 seats. The Government will be formed by a coalition. The strongest party gets 42 days to form a coalition of over 60 seats.
It's a national holiday. The whole country closes down - except for shops and restaurants. The business sector loses a billion+ shekels but the shops rake it in. We are going to the zoo for a change. After I've voted of course.