Installing Drupal

Hello my friends I am new in Drupal design.
I have installed in my server and under status report I am reading the following:
"See http://drupal.org/SA-CORE-2013-003 for information about the recommended .htaccess file which should be added to the /tmp directory to help protect against arbitrary code execution."
What shall I do add the text that is under the above link in the existent .htaccess file and overight all.
To tell you the truth I have done it once but then I could not enter my site.

I have a drupal site on my laptop that I want to put online.
I got all the info, names and stuff right in the settings.php file, but it is STILL not connecting. The online index.php still automatically goes over to the install.php, so it seems to not be connecting to the database I have for it.

Is there a debugging program I can get to tell me step by step what data is being processed by what function so I can know where the problem is and what it is not processing and tripping the switch to the install screen?

Hello!

I am trying to create a website to a boy scouts group, and i am trying to install drupal.
I upload by ftp the drupal files to the server, and made the changes to the default as i read in the installation guide.
I changed the permissons of the directory and tried to acess by the browser to the installation file, but it gave me the message:
500 - Internal server error.
There is a problem with the resource you are looking for, and it cannot be displayed.

I had this problem moving a site from test server to production. The (Temp old) was a reference to Temp folder on the testserver and the (Temp new) was a reference to the production servers Temp folder. To fix this:

Go to: Administration » Configuration » Media
Clear the field "Temporary directory" and press [save configuration]

Now Drupal will fill the field with the Temp folder from the new server.

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I have a drupal installation under the root called /sandbox2. I am not too familiar with configuring the .htaccess, but scriolling down thought I could resolve it by uncommenting "RewriteBase /" to "RewriteBase /sandbox2". It's still dropping down to the base landing page. I can access it at www.mysite.com/sandbox2/index.php, but www.mysite.com/sandbox2 redirects to www.mysite.com.

I'm installing 7.26 onto a domain that used to have a Drupal installation, before I decided to use another domain and thus removed the program. It seems to want to hook up its former database, which no longer exists. The message I've gotten is as follows:

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'torieaco_toranshawmedrupal.semaphore' doesn't exist: SELECT expire, value FROM {semaphore} WHERE name = :name; Array ( [:name] => variable_init ) in lock_may_be_available() (line 167 of /.../.../public_html/toranshawme/includes/lock.inc).