Annoying html's

While I have been trying to make html's I have come across many annoying errors of code. I have had trouble from things as small as forgetting to add a bracket at the end of a command. The way to ensure that this does not happen is to look over all the code that you write and make sure you inserted everything that is necessary. Once I corrected this error I began to mix up the commands to make tables. I began to see that my tables weren't working correctly I switched around the commands until it worked. To overcome problems with html's I suggest switching around the commands until they work.