When it comes to Drupal what are those Hot 10 things that are normally searched and interest people the most ?

Anyone who has liked the drupal videos on this website and on youtube must also consider Buying Video Tutorials

Here is the list of top 50 drupal modules by average monthly downloads. This data is as of 2009. With Drupal's popularity increasing the download data may vary. But the top downloaded modules are not likely to change much.

Here are some Free Drupal tutorials available on the web. This will be very helpful for beginners and for those who want to migrate from other CMS like Joomla to Drupal.

The forum module of drupal is very basic and when compared
to other forums softwares like vbulletin or simple machines it lacks features
& functionality .

Question is why would you use drupal forums.? I would say
that if you want a basic mechanism for discussion and don't anticipate a huge
group of users, then you can go with inbuild forum module as it fast and easy
to maintain.

Drupal does not have any special web hosting requirements. You can host a drupal site with any PHP / MySQL web hosting provider.   However there are some web hosts which provide some excellent support and features for Drupal sites. Most drupal hosting companies will provide you with Auto Installation or Free drupal installation.

When I started with Drupal sometime back there was no videp help or support.

If you have started with drupal and want to expand your knowledge, you either need to sit and spend time on Drupal Handbooks or buy some Drupal books.

On their 50th Podcast, Lullabot shares some great Tips and Tricks for Drupal Developers. This page is worth reading for Beginners and if you have time listen to the podcast too.