How to port maps and models but this only covers maps (NEED HL1:S and HL2)

Can't find Half Life Source? its unlisted but can still be found under a bundle, you need it since I don't know how gold source porting works.
Get both HL2 and HL1 Source installed, also pick up GCF scape and come back

go to the hl2 folder in it there is a half life 1 folder, copy and paste the maps folder to whatever file you intend to put into sfm, while in the hl1 folder open "hl1_pak_dir.vpk and extract the materials

(you can also extract the other stuff if you want them such as models and sounds)

take the materials folder and put it in your folder with the maps folder. You can label the folder anything, mines labled hl1 for this
example,
it should have both the maps and materials folder in it. Make sure to put it in the game folder of sfm, it should look something like

>common>SourceFilmaker>game>hl1

now open the sfm sdk and tick your map, or hl1 in this case, after that it should show up in sfm.