Thanks people. yeah I have noticed it changes a lot. probably wise to just do one when all the hacking has completely finished
Actually I would jump in now... 3 days ago I had an umodded WiiU. Today I have everything I want installed, Full games, VC Titles, eShop titles, and DLC.
My advice would be follow KoopaTroopa311's guide, but only sections 1, 2, and 4...
That will allow you to download and install quite a few games without the need for rednand, or Isouhax (patched firmware). Basically games will just install on your WiiU, and you just switch on and play them on or offline... very simple.
After your comfortable with how that all works, goto section 3.
After completing this you will be able to switch on your WiiU, run a customized game that will allow you reboot your machine into a patched firmware that allows you to run all the other titles, VC games, eShop games, and DLC.
The first part (sections 1,2 &4) will take no more than 30mins and is extremely easy, and I very much doubt you could brick your machine. The 2nd part (section 3) will take a little longer and you may run into a few hitches (I certainly did). Just read it a few times and follow it slowly...
Good luck!!