First new pc wordpress user needs help

Firstly, when you download and install MAMP/MAMP Pro, it by default installs MAMP; you have to deliberately choose to use MAMP Pro. I recommend not doing so at this point.
Just to try it, I ditched my current MAMP install (was just some testing sites) and started over fresh. Fresh download of the latest MAMP 3.0.7.3 and WP 4.0.1 on a Mac Mini running Yosemite.
From double clicking the MAMP download to viewing the WP site homepage … 3 minutes
1. download the FREE MAMP
2. double click the download package and run the MAMP install
3. start MAMP (Applications/MAMP/Mamp (double click)
4. start the servers
5. copy the WP download to Applications/MAMP/htdocs and extract there
6. there will now be a folder named wordpress
7. from the MAMP start page, select Tools > phpMyAdmin
8. click the Databases tab
9. enter a name in the Create database entry field (no spaces!) and click Create
10. in your browser, enter: http://localhost:8888/wordpress
11. click the Create a Configuration File button
12. at the database info screen, enter:
— database name: whatever you named it
— database user: root <the default MAMP DATABASE user>
— database password: root <the default MAMP DATABASE USER password>
— host name: localhost
— table prefix: wp_ <leave as-is>
13. fill out as required, un-check the privacy item (for local installs)
14. log in with the WORDPRESS user and password you just entered in the previous screen

These are the instructions that i am following to the tee which are legit and do work.

But when i input my new database name datfluki

I than goto this link\
http://localhost:8888/

it tells me to goto wordpress i click unisted states to log in.

Database name
Database username
Database password
Database host

for database name i put in “datfluki”
username i keep as root
password i keep as root
database host i keep as localhost
for table prefix i keep it as wp_

i than click submit and i just get the error

“error establishing database connection and im getting might pissed off.”