Welcome Synsensa. The main thing you should be aware of is that this is a great community, with a lot of really helpful people who are really into mapping. You will definitely be able to learn enough to build your own maps if you would like to, but you can also have a look here for some information on requesting a map. I think the costs will vary depending on what you are after, how long it will take, and who is available. Someone else might be able to provide a better answer than me. The only "commission" I'm working on here is a collaborative project which we're doing for a donation to the Cartographer's guild.
But yeah, the main thing is to feel welcome, and don't be afraid to post your own work and ask questions, this community is great, and I'm glad to be a small part of it!