strange. Some keyboard shortcuts in os x are kinda weird and not intuitive to linux or windows users, but they are there. It's totally possible to use mac without trackpad. even cmd+tab switcher has a lot of hidden (but googlable) things: while still holding cmd after initial cmd+tab, you can close apps with q, switch to other apps with tab and (cmd+)shift+tab or left/right arrows, show app windows with down, etc. There's also a cmd+` for switching between one app's windows. I still find that distinction weird from usability perspective, but it's not too hard to adapt to it.