Rachel Maddow is teaching her to use a teleprompter, so far with mixed results. Mika Brzezinski offered tips on pinning down squirrelly guests. Nicolle Wallace invited her to editorial meetings, and Andrea Mitchell is tutoring her on interviewing techniques.Jen Psaki spent the last two decades jousting with journalists. She’s about to find out what it’s like on the other side of the anchor desk.Less than a year removed from her perch as President Biden’s press secretary, Ms. Psaki will become the host of a weekly MSNBC talk show on March 19, the network said on Tuesday. “Inside With Jen Psaki” will air Sundays at noon, vying for the same weekend clout as political mainstays like “Meet the Press” and “Face the Nation.”It’s a quick transition to full-time anchor for Ms. Psaki, 44, whose deft defenses of the Biden administration — and feisty tête-à-têtes with Fox News’s Peter Doocy — made her a cult figure of sorts among liberals. She spawned the TikTok hashtag #psakibomb and was gentl …
