There are NO teachings of the Buddha easy to be gained in line with Dhamma and your welfare in German language, but it is't just a matter of giving at first place. Althought you wouldn't, here a tiny door to work on you conditions:
But since you mind is directed to consume and demand for it, might even not relexe if pointed on it, you may stay caught in the wheels of trade. So don't worry, those who invest into serving your desires will come soon. Just be patient, and you will get it even for "free".
The first section, Vinaya, you may get here "free": http://theravada-gemeinschaft-deutschland.de
Generosity is something totally destroyed in this land, so it is nearly everywhere else and the trade with Dhamma actually arose in this county... so really not lucky, or?
Nyanaponika and Khema made trade with Juwels also in this field Salonfähig and the business is good controlled by their disciples, you would get zensured and kicked out if disturbing the business. Stinginess and envy is not easy to abound.
Online, but not to share as Dhamma-Dana, just for consuming, the Mahavaga: http://www.satinanda.de/literatur/mahavagga-text.htm
And they made a promise, that if you give them Dana, they will release further books of vinaya for you personal consume.
Since possible a trader your self, you may choose also the (public) left wing part by visiting http://abhidhamma.de
The original trader assembling is found in the secound link. How ever you prefer to invest and give into trade.
Some books and hand of leaves, you may gain by requesting via wat metta, or dhammatalks.org even as a hard copy, like generously given by Upasika Keathi at one time:
Itivuttaka, von Bhante Thanissaro (übersetzt von Upasika Kaethi Pavoni)
Khunddakapāṭha, Bhante Thanissaro (übersetzt von Kaethi Pavoni)
Anguttara Nikaya (aus Hand voll Blätter), Thanissaro Bhikku, übersetzt von Käthi
The path is one of right choices, step by step.
Hardcopies in German of Dhamma-Dana: https://www.dhammatalks.org/de_txt_index.html
Given to request generously via: https://www.dhammatalks.org/ebook_index.html#booklist
In certain cases, you are also given to make merits in printing books as you are inspired, to invest in good conditions, and not bond to consume you old merits off.
For new releases in "poor" quality, look always here: http://sangham.net/index.php/topic,621.0.html
One is given to share and multiply ones merits given here how ever one may be able.