Go to flatpak's flathub website. Take a gander at quite a lot of freeware. You need no membership.
Flatpak website asks, what is your flavour? You pick the Solus icon, since all packages have specific instructions.
Welcome to Flatpak. At solus page there are two solus commands. One is to install flathub repo. Paste them both in your terminal, execute.
Go back to visual (detailed) repo of stuff. Find something you think is cool. Click on it. A cookie, of course, helps them remember you are Solus, and lists your individualized cut and paste, solus terminal install commands. Do it.
All installs/tests smooth.
After 3 hours this is my conclusion. You have an internet gui, if you will, and terminal work at the same time. I think every user needs them both, i.e., I doubt one could do all flatpak in terminal. I didn't mind.
Why? See above. Lousy search function.
I have flathub repo installed.
Flathub search weather.
Nothing.
Go to flathub visual repo online. search for weather. find mateo. cut and paste install. boom.
At least this was my trial run.
No complaints here. All is doable and executable.
I really like the program. I looked at their modest (I realize you can configure fp to add many repos) repo and liked what I was seeing. I can't imagine I'd have more than 3 installed if I do. Space-conscious.
I like that flatpak took the time to make all the solus app installation instructions easy without pain. (unless solus had something to do with that?)
Really really nice to see foss stuff where its not rpm, deb, tar, pick one and do whatever you want...it's another solus-specific repo, if you will, although not by the letter..
For a guy like me, all this playing around is considered personal growth...