I am having troubles installing mods

You will experience less issues with mods if you install them in an organized way :

- create an 'oblivion-download' folder on your desktop. Download the archives files in that folder (rar, zip, 7z files etc). It is always useful to have a copy of the original file you downloaded in case you need to reinstall a mod later.

- create an 'install' folder in your 'Oblivion/Data folder'.

- open the archive file with winrar and extract all files to that install folder

- open the install folder and read the instructions from the mod. There are always differences with how mods are installed. It comes down to this - copy all .esp, .esm files and folders such as Textures, Meshes, Music etc... to your Oblivion / Data folder.

- it is also helpful to create a 'readme' folder in 'Oblivion/data' where you will copy the instructions (readme files) from your mods.

- once you have copied the files from the install folder, you can delete the original copy from the install folder.

- read the sticky threads in the forum for more details about installing mods, especially about mod interactions/ conflicts and Archive Invalidation methods.

- also, at the very least, download OBMM (Oblivion Mod Manager) so you can reorganize the loard order of your mods more easily