Need to start some were in modding right? Why not try the Half-Life modding Kit. This Kit is designed to have all the tools you need to start your own Half-Life mod, simple mods can be made or advance ones like Base Defense with this small set of tools. If you want to start modding Half-Life you should try this.
Sorry About the Letter Box it is because of my screen is a square not wide screen like most pc's
These are some of the new models that will be in HLMK 2.1