In order to practice [x] and [ç], you can attack them from two fronts:
1. Produce a [k] first, then try to open your mouth. The difference between a [k] and a [x] is the same as the difference between a [t] and a [s]. You can also try opening the mouth slowly to go from one sound to the next, say [ts] first, and then try to reproduce the same thing with [kx]. Once this is working reasonably well, you can try the same for the [ç]-sound.
2. Start with an [s], then slowly slide back until you reach the initial sound in English "she", then slide even further back, passing [ç] until you reach [x].
Don't be discouraged if this doesn't work well at first, it may take some practice. If you can't make these sounds (yet), try to substitute them with an [h] rather than with a [k]; you'll be more easily understood that way.
Now for the unaspirated stops:
bh [v]
slender
dh,
gh [ʝ], both have the same sound.
broad
dh,
gh [ɣ], both have the same sound.
3. [ʝ] and [ɣ] are the voiced equivalents of [ç] and [x], respectively. Repeat exercises 1 and 2, and when you have found the sound, put your fingers on your throat, then let your vocal chords vibrate. Once you feel the vibration, you've got it.
4. Some more
Beag air Bheag: Go to lesson 3. Now let's find out more about each other!
Is mise GunChleoc agus tha mi às a' Ghearmailt. Cò às a tha sibh?