[Sidefx-houdini-list] .otl

[herman]

dear all,

i just start visiting the houdini exchange web and would like to try out some of the sop there. however, i'm not very familar with the houdini digital asset procedure... i know is a very green question, but i still need to ask, so when i download a file .otl, where should i paste it to?? i did try the .otls folder in houdini folder, but it doesn't seem to work. 
also, when say copy the folder to $home, where is $home??

thanks in advance.

cheers herman