In addition to what everyone else has already said:
If you want to keep things very simple, you can do the shoots for free, and charge only for prints. Have it printed, at a local printing service, and either demand payment before hand, or send them the photos with an invoice, and give them the option to return photo's that they are unhappy with.
There is obviously a risk that they wont pay you anything, but at least you save 200 usd on lawyer writing you up a contract
I disagree with this. First of all, whether you charge for your services or not, you absolutely NEED to have a contract if you are going to have "clients." Even if those clients are just friends, you need some sort of contract that spells out what they can expect and what YOU expect from them (payment, use license, etc). Just one example of something that happens All. The. Time.
Jane Photographer does a photo shoot for her friend, Sarah Social.
Jane just takes the pictures because they are friends, no need for a contract. Jane gives Sarah a bunch of pictures on a disk for her to use.
Sarah Social says "Wow, these are great!" then goes through photos, picks a few she likes, then promptly runs them through her OWN photo-editing app, applying gawdy filters, blown-out sun glare effects, changing backgrounds--and then posts the resulting really awful photos on all her social media sources.
Jane says, "Hey, you can't edit my photos like that!" Sarah ignores her, or says, basically, "Sure I can; thanks for doing this!"
A "discussion" ensues.
Jane Photographer and Sarah Social are no longer friends.
Seriously, no matter WHAT else you do--if you are going to start shooting clients:
HAVE A CONTRACT.
Oh, and the other part that I disagree with. Do NOT tell ANYone that they can "return" photos they don't want. No. No way. Because once those photos are in their hands, I guaran-dang-tee you that if they return any to you, they WILL still have their own copies of them. If they are prints, they'll scan them or have them printed; if they are digital, they'll simply save them, then give you the storage device back with the original photos.