going to peru

Hi, I'm going to peru and I'm crazy about it, that's what I always want it, but well.. I want some advice because I don't know much about it, I travel alone before but I'm a little afraid about the language and that's why I don't know if I should take a tour for everything or travel by my own.
I have a tour for machu picchu and the same agency offers other peru tours I'm really interested on them but I know that if I travel by my own I'll have more freedom and great experiences. what do you think?

***edited by moderator*** web addresses not allowed

This is something I found on one travel site. It might be important: [i][color=darkblue]"When entering the country, you need to pass the immigration office (imigracion). There you get a stamp in your passport that states the number of days you are allowed to stay (usually 90 days). You can no longer get an extension, so make sure that you ask for the amount of time you think you'll need. When those 180 days are up and you would like to stay for longer, you can either cross the border to a neighbouring country (Ecuador, Colombia, Brazil, Bolivia or Chile) and return the next day and obtain another 180 days or simply overstay and pay the fine when you exit. The overstay fine is only $1 USD per day overage, so if you stay 30 days longer it's $30. Many people do this, since it's much cheaper than leaving the country and returning.

You will receive an extra official paper to be kept in the passport (make sure you don't lose it!). When leaving, you need to visit the emigration office (migracion), where you get the exit stamp. Imigracion and migracion are found on all border crossing-points. Traveling to and from neighboring countries by land is no problem."[/color][/i]