Verb conjugation of "spend" in English

Dear Maximilian, I look forward to your visit in Switzerland. After a somewhat difficult start, it seems that we have increased the website traffic and we are starting to receive more visitors.
We have learned that some tenses, such as Present Tense are easier and not as complex as others. Is that right? In my opinion, tenses in English are much easier than in the Spanish language.
The course was a bit tough because the teacher always gave lots of homework. We were upset about his behaviour. He was very arrogant towards all the students. It was simply no fun to study there.