Hey, welcome to steemit!
You'll want to check out dtube for steem videos and steepshot for instagram style photo sharing, both post here as well.
free things you can do to minimize the problem. You'll also find the competition for eyeballs can be stiff, so, here are some ideas I'm usingI'm @markrmorrisjr and I work with a lot of newcomers. If you haven't yet, you're likley to run into bandwidth issues once you start posting. Here are some to build a new account to test the differences in the platform since I got here 2 years ago. If you need anything, don't hesitate to find me, or follow @dolphinschool (That's my new acccount) for new tips and hacks every day!
Thanks @markmorrisjr for the help and suggestions! I'll definitely check out those resources, I appreciate the help! Steemit is awesome, but I'm definitely feeling the learning curve ha