Breaking off rusted bolts and the like is a common thing mechanics run into most every day. They – or the automobile machine shop they use – have a bag of tricks to handle pretty much all of those kinds of problems. The only ones that might not be economically possible to repair in the suspension system are severely rusted mounts and mounting surfaces.
Suspension system work , especially when it involves removing springs as in your case, is not as easy a job for beginning diy’er. A better job for a beginner would be changing the oil and filter and replacing spark plugs. So if you are a beginner diy’er, good idea to take it to a shop. If you want to do stuff like replacing suspension parts, you really should have some kind of repair manual for your make/model/year. A Haynes or Chiltons would cover the proper repair sequence for that kind of job well for most cars. A single-car subscription to AllData would work too. Either way is inexpensive compared to the kind of problems you may run into if you do a job incorrectly or do the tasks out of sequence.