I use free pcb
http://www.freepcb.com/ but I still use XP as my XP machine has more graphics power than my laptop. Not sure how the software would work on new stuff. Make sure you read the whole page as there's some library stuff that you need to copy into the program folders. The FreeRoute autoroute software went missing because of a code dispute but you will find links to it on a famous forum started by an Aussie electronics guy.
If you go with free pcb you may find you use the board outline function to draw construction lines to help layout part placements. If you do this remember to not click on view/ show board outline because it will crash. Delete any construction lines when you have finished with them. Other than this it's fine and best of all free.
If free pcb isn't to your liking or not up to date enough for your machine then try
http://www.abacom-online.de/uk/html/sprint-layout.html
If you are making your own boards then I really think that starting with a schematic is a waste of your valuable time, then you have to assign footprints on a different page, then drop everything into a board level design and bla bla. With freepcb and sprint you just start designing the board straight away and almost everything is done in the same window. I tried designspark and found it annoying especially how it sometimes decides not to save your work because you aren't connected to a network even though the software is supposed to work offline it will have a meltdown every now and again.