One thing with the band saw, is you have to make sure the blade tracks properly in addition to using a fence guide (that is also calibrated to be parallel to the blade.
It involves setting the guide bearings, and making sure the band saw blade is running evenly balanced with no drift on the tires on the wheels. Alot of tweaking to ensure you have a tool that is able to cut without any "weave" or jagged lines.
Look into your operator's manual for proper adjustments. You may also want to look into a better blade (if you have worn it or if it is the stock blade).
Some here have also suggested a table saw. However, for ripping stock, the 1/8th blade of the table saw in many cases versus a THINNER blade of the band saw means you aren't opt to waste much of your intended fed wood. I would say it is much easier to use a table saw in straight, cross, and rip cuts (good fence and blade adjustment again - pending).
making sure the blade and fence guide are as close to perfect in being parallel, also eliminates kickback (that as stereotypically goes) and may lead to accidents. Also make sure the blade is running perpendicular to the table for the 90 degree setting.
For a table saw, if you are sawing long pieces, having a kerf splitter would also reduce binding to the blade, that would also cause kickback or problems. The idea is that as you run the piece through, it should be smooth with not much force or fighting. If you have to force a piece, there is problems one would need to address (blade cleanliness, adjustments, stock too thick for the power of the machine).
Here is an example.
http://www.rockler.com/micro-jig-splitter-steelpro-system-thin-kerf
Also, if one were to use these tools and do not have strong fingers or hands to feed the wood or to make the adjustments as you feed the stock, having a featherboard for boards would also keep the piece fed forward instead of kicking back. That would involve a fence with a T-track to set one up.
And by all means, take it easy, and be in no rush when running these cuts. When you rush things, things can get into an accident quickly if one isn't calm and in control.
With this in mind, almost one would never need to use a sander to "flatten" a piece (in fact, it would add a far more non-uniform plane especially if one were to handle a piece by hand on a power sander). Jointers and planers, perhaps, but that is reserved for truing and milling a piece to a workable dimension for the guide fences of the other tools. Sanders are meant for finishing a piece's surface.