Can't get homebrew working

I am brand new to homebrew. I have 4.2u on my Wii and I put hackmii (boot.elf) on my freshly formatted SD card, and then tried every single version of Bannerbomb V2. The first few froze the Wii, but most version appeared as a question mark in the SD Channel screen. Any ideas? Thanks!

You have to go to the SD Card Menu (the SD card on the title screen).

Use bannerbomb v2. bannerbomb v1 will appear as a question mark on the sd menu.

Installed homebrew channel on wii, and when I try to start Homrbrew bubbles go by a nothing else loads in but 2 small Icon lower right, what can I do to fix this? Wii v4.2

You are supposed to apps inside the "apps" folder you should have in the root of the SD Card. I would start by downloading and extracting Homebrew Browser into the "apps" folder and using that to download apps.

Also make sure that your apps folder isn't named Apps, APPS,AppS,etc. It is case sensitive and the folder can only be named apps.