How to do the German "R"

Before I start: one more tip for tests:
Hier sind Modelltest für fast jedes Niveau zum Gratisdownload
Modelltests

Not only English-speakers feel frustrated with this letter,
though it is essentially the French "R" and really easy to do
(as with all new sounds: not easy to master, so practice!!)
Thanks to ..... who asked on babbel.com for help, and here my advise:
the German "R" (actually we took it from the French) is easy to train:
gargle with water - now 'gargle' without water: voila, ther German "R"
actually the word gaRgle is a good word to train it, In German: GURGELN
The "R" is really between the G (like in GOLD) and the U (like in Pooh):
G - the tounge closes the throat then releases
U - the tounge is at the same position (G -released) and leaves the throat open
The R is "in between" those positions, opening the throat just a bit
(or only nearly closing it ;-) )
Try : Tauben gurren (Doves doing their sound)
Mich gruselt es bei gruseligen Gruselfilmen (I feel scary watching scary scary-movies.)
Grausame Grabräuber graben Gruben und Gräber. (Cruel Tomb-Raiders are digging holes and graves. )
Or pronounce "Cruel, scary, grave and try" like the German tourists do ....
MOST OF THE TIME THE LETTER "R" IS NOT PRONOUNCED "R" BUT "a"!!!
Good news: after a vowel (officially: always after long ones only, but I do it after ALL vowels) it is perfectly acceptable to pronunce the R just like "a" : Vater is fata, Bruder is bRuda
100% would be like bRud(ea) - the phonetic sign is an 'a' standing on its head.
In my hometown we speak all vowels before an 'r' a bit longer - and consequently
do then always the 'ea' or 'a' -
even the very short Wurst and Kirche become Wuuast und Kiiache.
Standard would be WuRst and KiRche - or at least that 'ea'-sound.
If you speak the Russian/Spanish 'RR'and can not stop it - do not despair:
That is tolerabel, but please NOT after vowels.
So: bRRudea and Kieache is not perfect, but
sounds MUCH better than bRRudeRR and KiRRche
(I can not do the "RRR" but would love to learn it! Any good advise?)
And Germans are lost NOT pronouncin R when speaking English ...
famous is the sentence: "Thank you for trrravelling Deutsche Bahn!"