Translation of rücksichtslos

I would like to know if Jack is interested to join us as well. Shared learning is called Tandem. I'm coming in 2 days to Spain. I will pay for the study costs of my daughter, and I assume all other costs as well.
Until now I have tried the copy the mode of operation of Mike in class. Even the homework that they gave us do not match the exercise that we tried yesterday. I could not fulfill this task anyway.
I am back in Switzerland, and the weather makes me crazy. Shall I write you on Vocabulix or to your regular email address? I have been working 20 years as an employee for a German company.