Eric,
If you truly intend to get your $25 up to $100, this will be significantly more difficult than just plunking down $100 due to the large amount of time it will take, given the stakes you would be playing to avoid risk of ruin.
However, if you consider yourself a poker novice, I would advise playing small, small stakes tables and get yourself a copy of Ed Miller's Small Stakes Hold'Em.
When you're confortable at whatever stakes you are playing, move up. Only move up when you're comfortable that you're beating the game.
Use the 300BB rule as a guide when you move up towards limits of .25-.50, .50-1, 1-2, etc. For example, you'll need $300 to play comfortably at .5-1.
I am currently in the process of using Homer's bankroll building from $100, and the blog is
here.
Tight play is a must, but you must also be aggressive when your hands are good. Search for BisonBison's hand converter and post some hands on the forum for some help/guidance if ever needed.
If there's anything I could advise right now, it's that you should use Neteller as opposed to Firepay when dealing with the crypto sites. When it comes to dealing with crypto sites, Firepay is a sonovabitch. You have to wait at least 10 days before wagering your money after you deposit.