Bryan, can you give context? これだけ when asked as a question depending on context and tone can mean "this is all?" "this is all you've got?" "is it over already?" and the like, a great expression for when you are feeling you have been ripped off or would like confirm a quantity. When said as a statement it means "that's all" "no more"
Pro Japanese teachers, correct me if I am explaining this wrong, but, したり is a verb ending or conjugation of する or "to do" that joins a string of verbs together. For example... If someone asks "what do you like to do for fun?" you could answer:
gengou wo benkyou shitari, tomodachi to attari, netto wo tsujite shiranai hito to kaiwa shitari suru koto ga suki desu.
or: I like to study languages, meet with friends and talk with people I don't know over the internet.