Short on cash but looking for a basic painting program? Fire Alpaca
is offered to download for free. Only cost to you is a little ad that appears when you start it up (it's not an obnoxious ad either, in fact, it sometimes shows what you can do with the program; you can close the box and it never appears again until you start up again). Something that it does very right is it has a Correction setting, much like Paint Tool Sai's famous Stabilizer, to give you those clean, tapered strokes. Since it is free and being worked on by volunteers, don't expect Photoshop capabilites (of course, you can save files as .psd; this makes it a great compliment to your Photoshop workflow, making it quicker to create sketches and line art). But it's worth the download.
What's that? You don't have a PC? No problem. It's compatible with Mac as well! (My primary reason why I searched for a program like this.)
Hopefully you found this update fulfilling ^^ Now for a little advice...
I most likely won't be renewing my membership on dA. I know probably quite a few of you are thinking about buying a membership. You really don't have need to do it if you just want to show off your art. If you detest ads or want to use dA for commissions, then yes you will definitely need it. But all the flashy features aren't all that special. To use many of them you need to have a decent amount of CSS coding in your background. If you want a platform to showcase your art, there are much better places than dA.
Reason I'm saying this is because dA has become more of a social media site than an art site. It's not bad if you want to share silly drawing with everyone, but if you are truly striving to be a professional in this industry, you need to do better. I have been moving over and trying out different websites, but I won't be leaving dA, I'll just be very inactive more than I am now.
Another piece of advice: Be very careful about people here. Since more and more people are using dA everyday, you will meet some pretty nasty people.