Hi Zach, thanks for taking interest in TBC and learning the basics! There's a wealth of knowledge linked on the home page of this forum under the Getting Started button and the Tutorials link therein. Take a scroll down the list and look for anything that pertains to corridors and alignments. That should get you on your way. You can also access the tutorial links from within TBC on the Support tab in addition to F1 Help menu topics that cover every TBC command in detail.
Hope this helps!