99 podcast episodes is a lot. Hopefully, when you reach that milestone, you've learned a thing or two about how to make your podcast better. This episode is a collection of lessons I've learned over those 99 episodes. First lesson, be your own best critic. But if you're a creative type, you probably already are;) In that case, give yourself a break, create, learn, repeat.

Most of the lessons in this episode where culled while listening to most of my back catalog of content. I scrubbed through all my past podcast episodes picking out those things that made me think I could of done it differently or want to change moving forward past episode 100.
Here are the highlights or perhaps in this case they are lowlights?;)

Get reliable hosting from the start. I had to migrate from free hosting when it closed. Not a shock since it's hard to keep the lights on for free. The migration can be a headache, especially if you have lots of episodes and it may end up costing you all the money you "saved."
A how-to show, like mine, would benefit by telling the audience to listen in reverse chronological order to get the most recent info. Consider whether or not you may need to teach your audience how to listen.
Don't start with an intro episode, start off with content as fast as possible. Don't do placeholder or episode zero. Start episode one as a regular episode. Deliver real content right from the start. Your audience will learn about you and your show over time, when they have already decided that they want to come back again and again because your content is good.
Starting my show as a live show AND a Q&A was a bad first move. I didn't have an already established audience which means it's really hard to fill up a chat room with questions or to even show up to the live-stream in the first place. Being live is fine but I'd save it until you build a core audience and only then if you have the extra time to do it.
Establish your format in the first 10 episodes (minimum). On episode 8 I had already mixed in an interview which was much different than a how-to show. I would of rather nail down exactly what the show is, deliver a lot of that content then learn how best to introduce various formats. Interviews worked great on TPS once I learned the best way to integrate an interviewee with my audience.
Use a tool to loudness normalize your audio. Auphonic.com is my recommendation.
Start your email list when you start your show and consider using a single call-to-action in your show to move listeners to sign-up.
Carefully consider your titling, artwork, ID3 tags, and overall branding for items that are harder to change the further you get along.
Shownotes are a perfect place to outline each podcast episode. Besides providing more text for your notes, it will serve as a great way to search your content for easy reference and to know if any given topic has already been covered. Combine this with a good search tool on your website.
Don't break to music only. Put a music bed underneath what you are saying to maximize efficiency of a listeners time.
Setup your social and let people know how to reach out, how to share. I started @podcasthelper at episode 8 and it would have been nice to have the social channel setup when I started but this also isn't something to stress out over more than just something to consider when starting. At a minimum, reserve your podcast's name on the largest social networks.
For interviewees that are not necessarily known to your audience, write titles for the topic not the person but include their name in the title, at the end for good SEO in iTunes etc.
I probably wouldn't have split some interviews into two episodes. Those interested enough will break up a long interview on their own.
Include clickable links such as your email sign-up and any other calls-to-action in you...