There's also many free, or at least cheap one time payment, options out there as well. Almost everything in Adobe Creative Suite can be done with alternatives.
Krita is the only one i'll comment on. If you ignore everything else, do yourself a favor and try Krita. Photoshop isn't as good as this. If you're into making your own artwork, Krita.
Photoshop - Krita (Win, Mac unstable but works with OSX10.9, Linux), GIMP (Win), Pixelmator (Mac - $30)
https://krita.org/
http://www.gimp.org/
http://www.pixelmator.com/mac/
InDesign - Scribus (Win, Mac, Linux)
http://wiki.scribus.net/canvas/Scribus
Illustrator - Inkscape (Win, Mac, Linux), Affinity Designer (Mac - $50)
https://inkscape.org/en/
https://affinity.serif.com/en-gb/
Premiere - DaVinci Resolve (Win, Mac, Linux)
https://www.blackmagicdesign.com/products/davinciresolve
Dreamweaver - Microsoft Expression Web 4 (Win), Aptana Studio 3 (Win, Mac, Linux)
http://www.microsoft.com/en-us/download/details.aspx?id=36179
http://www.aptana.com/
After Effects - Wax (Win), Blender (Win, Mac, Linux)
http://www.debugmode.com/wax/
http://www.blender.org/
For the more tech involved people there's other options too.
If you are comfortable with Linux you have a very easy option to get all the functionality of Adobe Creative Suite.
Just install Ubuntu Studio and you're done.
https://ubuntustudio.org/
This site does a better job of explaining what all is in Ubuntustudio.
http://www.creativebloq.com/productivity/free-alternative-adobes-creative-cloud-21514120
And if you don't have a separate computer (or 2nd hard drive) you could always install it to a USB stick, SD card, or CD and run the entire OS off that without making any changes to your main computer. Simply restart your computer and tell it to boot from that device. When you're done, restart normally.
But seriously, Krita!