I’m a little perplexed. If you had a successful install of AL, IIRC, it should just boot up into Openbox as a default. Nothing more for you to add. So I think that there were other issues that happened and were not mentioned. At this point, it sounds like you are having alot of issues.
It might be a better option (since its a vbox instance) to reinstall from the very beginning.
That’s what I would do at least since it sounds like all you have invested is a little time and no real configs etc. Of course, weeding through the issues is a good choice if you really want to get into some of the meat and 'taters of Linux. And that’s not a bad thing.