今天的句子

我今天六点起床后，立刻开始复习汉语的词汇。七点钟我骑自行车去买面疱面包，然后我一边吃早饭一边听广播。吃完的时候，我就学习了新的汉语课。我刚收到中国的朋友给我的消息。
今天天阴，大概太阳不会出去出来，我最好待在家里继续学。明天在Skype上我跟汉语的老师约好明天在Skype上见面。

Good job! I can fully understand the things you wanna express. However, keep in mind, do not forget the subject in one sentence, such as I, he, she, etc. Sentence cannot be complete if there is no subject. Besides, in the last sentence, the part of "明天在Skype上见面" is the appointed thing and so should put behind the verb "约好". Anyway, your Chinese using skill is pretty good!