There are different kinds of boat in the market, aluminium, fibre glass is more common now. Jon boat, Mod-V, semi-V, Deep V, Bass boat....
You need to know what kind of fish you are going for, what kind of lake you will fish, who you will go with, etc. But the most important thing is your budget.
My first Boat is a semi-V from Prince Craft with 35HP with Steering, I have asked myself all these questions before I decide. I fish in small lake for Bass, Walleye, Pike and Crappie and with my family most of the time. during that time my kids was 2 and 5, so I think a they can walk in the middle more safely and that boat is good for 5 people. Now my kids all grown up then I change to a Mod-V only good for 4 people with 75HP, cause I know we won't fish together that much. If you are not a handy man, every season you will need to spend money for winterizing and pre-season. more Horse power more money.
I bought my first boat in the boat show after I walk through all the boat I interested then finally lock down to PC. But before, I have talked to people they own a boat for experience and reason too.
Most of the Boat dealer will offer you a lesson in the water for launch and trailer the boat. Also you can find lots of video in Google about trailering, launching and retrieve. After you have watch those video, practice in a Mall parking lot on Sunday, that's how I learn backing up. ( during the time everything was close on Sunday)
Here is some web site, maybe you can have a look:
http://ezinearticles.com/?Pre-Towing-Check...iler&id=1032569https://www.youtube.com/watch?v=kSnjak8XEmo&feature=relatedhttps://www.youtube.com/watch?v=728r-2XgXLM&feature=relatedhttps://www.youtube.com/watch?v=ILQ8teM177Mhttps://www.youtube.com/watch?v=_Jx2LjzabOoLast thing, when you decide which brand and what kind of boat you want, try to go with a friend who is experienced with boat then you will know are you dealing with a good people. Reason why I said that is because one of my friend bought his first boat in the boat show, when he asking for what is in the package, that salesman told him whatever on the trailer is the package except the Winch Jack. It's extra, he told me that after he purchased the boat, I went to pick up the boat with him cause his new van hasn't arrived yet, I found that the Capacity plate is missing, when we asked that salesman, he said they forgot to put that in, then he just take one out from the other boat in the showroom and put in my friends boat. funny thing is the boat my friend purchased is for 3 people but that salesman put on a 4 people capacity plate. After that we found the hatch of the livewell is bent. That salesman said they notice this problem that's why all the new coming boat will add a support bar, of course we asked how about our boat then he said call him 2 weeks later, for safe we asked him put this as a note in the sales agreement. Everything same as buying a car, check before you sign anything. If not it will be TOO LATE!
Hope it can help and good luck.