You need to click into the teachers profile. You find the lesson in the middle of the page. You will have a choice between 30 60 90 minutes it will show you to the pay part and then you proceed to check out.

I can help

Another is basically a contraction of "an other" you need to establish a singular with "submenu". It is one of 2 direct objects in your second sentence and your first "advanced options" is plural.

Group is a more ambiguos term. You are more likely to use set on a group of non living things than a group of living things. A chess set. A steak knife set. A set of tools, or a set of keys. Unlike a group of people or living things(which there are soooo many different words for groups of animals, native speakers dont know them)

Generally an aim is to reach a target. Like an arrow being aimed at a target.

Are you in a good or bad mood Everyday? If you said "in a good mood",then congratulations! While if your answer is" in a bad mood", you should pay more attention to it and make yourself be in a good mood. Maybe you don't know that there are plenty of importances of staying in a good mood. Firstly，staying in a good mood plays an essential role in our both physical and mental health.If a strong person stays in a bad mood for a long time,he will become weaker than before and even be sick. Mental health is related closely to physical health. At the same time,a good mood can bring us a better immunity. Secondly, maybe someone in a bad mood will do something harmful to himself or herself, such as overeating and overdrinking, hurting himself, wasting time on purpose, ect. Someone in a good moon can think with a sensible way so this kind of things won't happen to him or her. Thirdly, there is no doubt about that mood also having an influence on our study, work, and daily life. Someone will do better in these aspects when they have a good mood. Last but not least, whether our mood will have a relation with our personal relationship? Maybe you have gotten an answer in your mind for this question. It's a fact that everyone has good moods and bad moods.We all want to keep a good mood. Because thats how important a good mood is!

You could use especially or in particular. Especially seems weird though. Mainly is probably the best.

Especially in business and politics in english, people tend to use vague wording. They will use the word resolution when they mean answer or solution.