It depends on the question you are asking.
You can start a sentence with "Also"
You can.
No it won't, unless it is at the start of a sentence.
No, You cannot use but to start a sentence.
Madrid is the capital of Spain. The company needed to raise more capital in order to expand. A sentence should start with a capital letter.
To start a sentence without using "I," you can use phrases like "It is important to..." or "One should consider..."
Yep. There's no problem with using 'an' anywhere you want to. You shouldn't use and at the start of a sentence, though.
Yes. 'Thus' is another word for 'therefore'. Thus the sentence you start of with 'thus' should be an explanatory sentence.
it depends on how you use the sentence for example: you will develop health problems is the way you should use it but if your saying you over there put on that shirt that is wrong not quite. you can say "You over there! Put your shirt on!"
It should start with a topic sentence.
Yes it should.
no