tt400 wroteYou should make sure your drive bay is compatible with an SSD. Other than that I believe it's plug and play. Also you should not store all your data on your SSD. Only the OS and programs should be stored to it. The fuller your SSD, the slower it will get and the sooner it will wear out.
SSDs handle being full MUCH better than HDDs. A full SSD isn't going to necessarily wear out faster than a partially filled SSD. Plus, no SSD is going to die from the amount of writes performed. Consumer SSDs have almost reached the 1 Petabyte mark in torture tests (continuous writes to the SSDs) and they're still doing fine. A heavy SSD user who keeps writing to his SSD would probably need like 50 years to make the thing stop working.
So yes, you can store all your data on the SSD, particularly if it's large enough and it's the only drive available in your laptop. It'll handle being full miles better than an HDD. A portable, external HDD is also a good option for storing large files but it decreases portability, of course.