With the SS, you're in luck because it's a big torquey engine, so it's harder to stall. Hills will come with practice. A lot of beginners sequence their steps, i.e. right foot off the brake onto the gas, apply throttle, then let out the clutch. It needs to be apply throttle and let out the clutch. One movement, and it all happens while the car is in that freefall state immediately after you let off the brake. Practice, practice, practice. If you have to practice in a busy area, have someone else drive behind you to block for you on hills and give you plenty of space.
The e-brake trick is...tricky. Instead of setting the brake, you pull up to where it would be set, but the release button should still be pressed in. Apply throttle and let out the clutch, and as soon as the clutch grabs, release the brake all the way.
I think there's a caveat there. Ride the gear you're in all the way down to just before it lugs the engine (say, 1000 rpm), THEN push in the clutch. If I'm in 6th, I'll usually shift to 4th and ride that down to 15mph or so and then clutch in. Key is you don't want to be going 40mph and then just clutch in. You want to keep the car in gear as long as possible for control, but you don't want to wear the clutch by slipping it to downshift.
In advanced stages, you can learn to rev-match on a downshift, which does not wear the clutch if you are good at it. Basically you blip the throttle when you clutch-in, select the intended lower gear, and let out the clutch. The "blip" should be to the RPM at which the next gear wants to engage. I.e. if I'm in 4th at 35mph, 1500rpm, and I want to grab 3rd and pass someone, I'd blip the throttle to say, 2200rpm, slide the gear shift to third, and let out the clutch. There should be no slip.
And when you get really advanced, you will learn how you don't even need the clutch, except for selecting reverse and shifting into 1st gear
...I still use the clutch, but that's only because clutch-less shifting is supposed to wear the syncros harder. Clutches are cheaper to replace.