It really is worth getting SKSE and SkyUI. You'll be able to use so many more mods from the nexus and be able to customize their settings in-game with the MCM menu.
I'll try to list the steps here:
1) Download SKSE from http://skse.silverlock.org/
2) Extract the contents of the folder (assuming you chose to download the archive file). You can do this by right-clicking the folder and clicking 'Extract Here' if you have WinRAR. This will give you a usable folder.
3) Open the folder from (2), copy all items with names that start with 'skse_', and paste them in your Skyrim folder (i.e. the folder where you have your TESV.exe)
4) Go back to the folder in (2), copy the 'Data' folder, and paste it in your Skyrim folder as well. Click yes if asked to overwrite.
4a) You can do this instead with Nexus Mod Manager. With WinRAR installed, right-click the 'Data' folder and click 'Add to Archive' to get an archived folder (you might want to rename it to something like SKSE Scripts). Then open NMM, select 'Mods' tab, click 'Add mod from file' button, and select the archive folder you just created. Then activate this new SKSE scripts "mod" you just added. This does the same thing as dumping the contents into the data folder in your Skyrim folder, except removing the files is much easier. You can just deactivate the mod via NMM and they'll be removed.
5) Now open Steam as normal, but instead of launching Skyrim from the library, use 'skse_loader.exe' from your Skyrim folder instead. You might want create a shortcut on your desktop, rename it, and give it a new icon (like the Skyrim logo). You have to launch the game this way if you want SKSE to be running.